BMW probably came out with a liquid cooled engine after they developed a proprietary antifreeze/coolant that they can sell for three times the cost of anything else. And, it will void your warranty if you use anything else.

BMW probably came out with a liquid cooled engine after they developed a proprietary antifreeze/coolant that they can sell for three times the cost of anything else. And, it will void your warranty if you use anything else.

haha and the properly spec'd version won't be available in the US and the dealers will tell you to use something other than what BMW specs and there will be a 1000 post thread on ADV debating the issue.

haha and the properly spec'd version won't be available in the US and the dealers will tell you to use something other than what BMW specs and there will be a 1000 post thread on ADV debating the issue.

OMG. That's hilarious! Now, along with the "which oil" threads, we'll have the 'which coolant' do you use threads. Now that's progress.

__________________
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[QUOTE=g_e_young;19518926]What is the story with these pics? Are they leaks from Wunderlich? Or just some photoshop nonsense. I'm sure Wunderlich has seen the bike so it these are leaks, this very well may be the bike in it's final form, along with Wunderlich bits.

The prime reason for the Boxer engine is perfect primary harmonic balance. For a given displacement, an inline configuration cannot approach the smoothness of the Boxer. This is why Porsche, Subaru and most light aircraft engines are Boxer Configuration. In the case of the light aircraft, there is the small matter of FAA certification and difficulty of obtaining said cert...

In a boxer twin, rocking couple is introduced because of the con rod offset.

BMW uses an inline six for their automotive products, which is far, far smoother than a boxer motor. I would say that an inline six is far smoother than a boxer.

In a boxer twin, rocking couple is introduced because of the con rod offset.

BMW uses an inline six for their automotive products, which is far, far smoother than a boxer motor. I would say that an inline six is far smoother than a boxer.

Quote:

Originally Posted by Mr. Magoo

My K1600GT with the inline 6 is FAR smoother than any of the 5 boxers I've had. The Gt is the smoothest bike/engine I've ever experienced. Amazing bike.

Quote:

Originally Posted by EJ_92606

Seriously? a 6 is smoother than a twin? Never would have guessed that.

I'm shocked, I tell you, shocked. Is that why they use more cylinders on those engines? Maybe we should be after BMW to make a six cylinder GS?

Yes, there is rocking couple in the Boxer twin. That's a different component of engine balance from harmonics. For a given power, displacement and cylinder count, the boxer motor is going to have less vibration than an inline or V configuration. I know this: All of my GS's have been smoother than my 4 cylinder FJR at cruising velocity. I sold the FJR because: The only thing the FJR did better than the GS was go 150mph...